Cross-rail guard



July 10, 1928. 1,676,311

w. F. ZIMMERMANN CROSS RAIL GUARD Filed March 27, 1925 wue wtoz PatentedJuly 10, 1928. p

1,676,311 UNITED STATES, PATENT OFFICE.-

wimmur r. zmmnamauu, or mArLEwoon, New JERSEY, ASSIGNOR To, GOULD annnnnennr, or NEWARK, NEW JERSEY, A CORPORATION 01 NEW JEBsnYiCROSS-RAIL GUARD.

Application filed March 27, 1925. serlal li'oildflsli.

My invention is concerned with means for protecting the guiding andbearing surfaces on a shaping machine from dirt, chips or other foreignmaterial, and is chiefly 0011-,

" guard member to prevent any chips or dirt 6 cerned with means forprotecting the's'urfaces of engagement between the cross head and themain frame and between the work-. r

. mam frame of the machine. The end flanges of the guard member arecutaway near the table saddleand the cross head.

In' shaping machines, as now constructed,

10 a reciprocatmg ram, which is mounted on the main frame of themachine, carries a cutting tool. A work table, which is mounted on asaddle below the cutting tool, is movable in a horizontal direction alona cross head. The cross head is movable in a vertical direction alongthe main frame of the machine. e chips, which are scattered over thetable saddle and the cross head by the cutting tool,are not only liableto injure the surfaces of engagement between the table saddle, thecrosshead and the main frame but are'liable to displace the position of thecross head with respect to the main frame. When the cross head isunclamped from the frame to effect vertical movement thereof, an openspace is generally formed between the upper edge of the cross head andthe 4 main frame by reason of the action of the weight of the table andthe cross head. If dirt or chips fall into the open space thus formedbetween the cross head and the frame it is difficult to clamp the crosshead back into position without injury to the surfaces of engagementbetween the head and the frame.

One of the chief objects of my invention is to provide a guard memberthat shall insure against chips or dirt coming in contact with thesurfaces of engagement between the table saddle, the cross head, and themain frame. The guard member also serves to protect the operatingmechanism for. the

saddle and the cross head against chips and dirt. A guard member, whichis preferably 5 composed of sheet metal, is secured to the top of thecross head in position to extend over a portion of the work-tablesaddle. The guard member not only extends over a portion of the tablesaddle and over the cross head but also projects a short distance overeach end of the cross head. The front and end ed es of the guard memberare bent upward y to form flanges of very short height and the rear edgeof the guard mem her is bent upwardly to form a much higher flange. Therear' flange is positioned adjacent tothe frame of the machine andcooperates with the horizontal surface of the coming into contact withthe surfaces of engagement between the cross head and the front edge ofthe member in order. to permit the removalof the chips which have beencollected on top of the uard member.

Near the front of the guar member is 'secured a yieldable means whichengages the 1 top of the table.

to the guard member. The strip'of leather serves to prevent the passingof any 'chips,

and dirt under the guard member to; irijure the above mentioned surfacesof engagep I r Other objects and advantages will be in ment.

The yieldable .means is preferably a strip of leather which is rivetedpart indicated in the following description and in part renderedapparent therefrom in connection with the annexed drawings.

To enable others skilled in the art so fully to apprehend the underling' features hereof that they may embo y the same in the chine isillustrated comprising 'a base l'upon which is mounted a main frame 2.The

main frame 2 carries a reciprocating ram 3 which in turn carries a toolhead 4. The ram 315 reclprocated in any conventlonal manner and. thestroke thereofmay be' Referring to the drawing a shaping mavaried asdesired in accordance with usual practice. A cfoss head 5, whichsupports a Work-table saddle 6 is. secured to the end face of the mainframe 2. The saddle 6 carries. a work-table-G? and the table carries thework 30. As illustrated in the drawingsthe crosshead 5 is secured to themam frame 2 bymeans of strips 7 and bolts 8,

' one only of each is illustrated on the drawing. The vertical movementof the cross head 5 on'the main frame 2 is effected by means of a screwshaft 9.- The screw shaft 9 may be controlled or rotated in anyconventional manner. I Before-any movement of the cross head 5 can beeffected on the main frame, it is necessary to unclamp the cross head byloosening the bolts 8.. Upon unclamping the cross head, it is apparentthe weight of the table 6" and the cross head 5' tends to form an openspace between the upper edge of the .cross head and the main frame. If.no means is provided for pro tecting the surfaces of engagement betweenthe cross head, and the main frame, chips and dirt will 'collectin such'open space between the cross head and the; main frame whenever the crosshead is unclamped to effect vertical movement thereof.

The work carrying table 6 and the saddle 6- are not only supported onthe cross head 5 but are guided by means of surfaces formed on suchcrossv heads. A hook por-,

. tion 10 of the saddle 6, which projects over the part 12 of the crosshead, not only rests on a bearing surface formed on the cross headbutalso engages a wedge member 11 at the rear of the part 12 of thecross head. Moreover, a guide surface-is formed on the cross head nearthe lower part thereof and b'earin surfaces are formed on the frontthereo It is very desirable and essential for good operation of themachine to prevent chips or dirt from injuring such bear-- ing and guidesurfaces.

A guard member 15, which is preferably composed of sheet metal such forexample, sheet steel, is secured to the top of the cross head5 by meansof bolts 16. Suitable spacingmembers or washers 17 are placed be.

tween the top of the cross head and the guard member in order toholdsuch guard member above the top of the table saddle 6. A flathorizontal portion 18 of the guard member projects completely over thecross head 5 and over a portion of the work table saddle in order tocover all of the above mentioned guide Moreover, the horizontal surface18 extends somewhatbeyond the ends of the cross head in order to protectthe mechanism which is mounted on one end of the cross head 5 foreffecting movement of. the head and feeding movements of the workcarryin table 6.

The front edge of the guard'mem ber is bent upwardly to form a flange 19and the end edges thereof are bent upwardly in like manner to formflanges 20. The end flanges 20 are cutaway at 21 in order to permit theeasy removal of any chips which may be collected on the horizontalsurface 18. The

and bearing surfaces.

rear edge of the guard member is bent 111 wardly to form a flange 22which is much higher that the flangej19 at the front of the guard memberand the flanges 20 at the ends thereof; The flange 22 is positionedadjacentto the main frame 2 ofthe machine and cooperates with thehorizontal surface 18 to prevent any chips coming in contact with thesurfaces of engagement between the frame andthe cross head. An opening23 is formed on the horizontal surface 18 of the guard member to ermitthe screw shaft 9 to pass therethroug -when the cross head is near itslowcrmostposition. The opening 23 in the guard member is covered bymeans ofa casing or box 24; which is secured to the guard member in anysuitable or convenient manner. The casing 24 serves to protect the screwshaft 23 from chips irrespective of the crosshead position.

Near the front of the guard member 15 is mounted a yielding means 26which serves to close the opening between the guard member and the tablesaddle 6. The yielding means 26 is preferably a leather strip which isriveted to the horizontal surface 18. The leather strip 26 is always inengagement with the work-table saddle 6 and prevents chips from passingunder the guard member, as indicatedin 3 of the drawing.-

The resiliency of the guard member, which is composed of sheet metal,and the yieldable nature of the leather insures a firm engagementbetween the leather and the table saddle to prevent any chips from passing under the guard member. also be noted that the yielding nature ofthe strip 26 eliminates the necessit of ac- It should curately aligningthe guard mem er with the top of the work-table saddle.

\Vithout further analysis, the foregoing will so fully reveal the 1st ofthis invention that others can, by app ying currentknowh edge, readilyadapt it for various utilizations by retaining one or more of thefeatures that, from the standpoint of the prior art, falrly constituteessential characteristics of.

either the generic or specific aspects of this invention and, therefore.such, adaptations should be, and are intended to be, compreformed on therear edge of the guard member, said flange being positioned adjacent tothe machine frame; and a leather strip sethe combination comprising aguard member extending over the cross head and a portion of the tablesaddle; a raised flange formed on the rear edge of theguard member andpositioned adjacent'to the frame of the machine; and a yieldable membersecured to the bottom surface of the guard member and engaging saidtable saddle.

3. In a shaping machine having a cross head mounted on the main frame, atable saddle movable along the cross head, and a screw shaft for movingthe cross head, the

combination comprising a guard member mounted on the cross head andextending over the cross head and a portion of the "table saddle; acasing mounted over said guard member for receiving the end of saidscrew shaft; and a yielding member secured to the bottom surface of theguard member for engaging the top of said table saddle.

4. In a shaping machine, the combination comprising a cross head movablevertically along the main frame of the machine; a screw shaft for movingthe cross head; a work table saddle movable along the cross head; aguard member secured to the top of the cross head and having a raisedflange positioned adjacent to the frame of the machine; a casing mountedover an opening formed in said guardmember for receiving the end of saidscrew shaft when the cross head is in a lower posit-ion; and yieldingmeans securedto the lower front surface of the guard member andengagingsaid table saddle.

5. In a shaping machine, the combination comprising a cross head movablewith respect to the main frame of the machine; a work table saddlemovable along the cross head; a guard member secured to the top of thecross head and extending over the table saddle, and yielding meanssecured to theguard member and engaging the table saddle.

6. In a shaping machine, the combination comprising a cross head movablealong guide ways formed on the main frame of the machine; a work-tablesaddle movable along the cross head; a guard member secured to the topof the cross head and extending over the table saddle .and formed toexclude chips from the surface of engagement between the cross head andthe main frame;

and yieldingmeans positioned between the guard member and the tablesaddle.

7. In a shaping machine, the combination comprising a cross head movablealong guideways formed on the main frame of the machine; a work tablesaddle movablealong guideways on the cross head and having bearing surfaes thereon; a guard member secured to the top of the cross head andextending over the table saddle and formed to exclude chips from thesurfaces of engagement between the cross head, the main frame, andfthetable; and yieldin means positioned betweenthe guard mem er and thetable saddle.

8. In a shaping machine, the combination comprising a cross head havingvertical movement on the main frame of the machine; a vertical scre'wshaft-engaging said cross head for effecting vertical movement thereof;a workrtable saddle movable along said cros's head, said table beingmovable along uideways formed on the cross head secured to the top ofthe cross head and extending. over guideways formed on the frame and onthe cross head; and yielding means secured to. the guard member andengaging the top of the table saddle to keepchips and dirt from theguide and bearin surfaces between the frame, the cross hea and the tablesaddle.

9. In a shaping machine, the combination comprising a cross head havinvertical movement on the main frame 0 the machine; a vertical screwshaft engaging said cross head for effecting vertical movement thereof;a work table saddle movable along said cross head, said table saddlebeing movable along guideways formed on the cross head and said headbeing movable alon guideways formed .on the frame; a guar member securedto theto of the cross head the frame and on the cross head, said mem herhaving a casing mounted thereon to receive and cover the end of thescrewshaft for moving the cross head; and yielding means secured to the guardmember-and engaging the top of the table to keep chips and dirt from theguide and bearing surfaces between the frame, the crosshead and thetable saddle. A

In witness whereof,'I havehereunto subscribed my name. 1

ILLIAM F. ZIMM'ERMANN.

